To provide keyword-based access to a large text file it is usually necessary to invert the file and create an inverted index that storeso for each word in the file, the paragraph or sentence numbers in which that word occurs. Inverting alarge file using traditional techniques may take as much temporary disk space as is occupied by the file itself, and consume a great deal of cpu time. Here we d...

In this paper we address the problem of planning a temporary storage area in a shampoo making system. Everyday, the packing service of the company, which gathers several packing lines, transmits plans of orders to produce (also called batches) to the making service. Each plan corresponds to the work that will be performed by one packing line for the next production horizon. A batch, which consi...

this study conducted to investigate the effects of grazing in a short-term stocking system on the water-soluble carbohydrates (wsc) and nitrogen (n) reserves of permanent parts of bromus tomentellus, cephalaria kotschyi and ferula haussknekhtii in saral rangelands. a key area was selected with a permanent exclosure area and two temporary exclosure areas. root excavation was conducted at six to ...

In order to save storage space, the data collected from body area networks can be stored in a third party. However, this may bring security problems. The common method is encrypting data before outsourcing. In this paper, we design a role-based access control scheme (RACS) used in the cloud. Firstly, we classify the data which are collected from body area networks into different types, and use ...

a r t i c l e i n f o Keywords: Actual travel paths Building information modelling (BIM) Construction site layout planning (CSLP) Congested sites Facility dimensions optimization Interior storage Site layout planning is often performed on construction sites to find the best arrangement of temporary facilities so that transportation distances of on-site personnel and equipment are minimized. It ...

General sparse elimination is designed to take maximum advantage of the sparsity of an N ×N matrix A. Only the nonzeros of A are stored, along with some extra integer overhead to identify the nonzero matrix elements. This extra integer storage may be avoided for the triangular factors generated by an LDU decomposition, generally without increasing the order of complexity. In addition to permane...

In rail freight operation, freight cars need to be separated and reformed into new trains at hump yards. The classification procedure is complex and hump yards constitute bottlenecks in the rail freight network, often causing outbound trains to be delayed. One of the problems is that planning for the allocation of tracks at hump yards is difficult, given that the planner has limited resources (...